Found a dwarf star companion EPIC 206011496

European astronomers using the 8 meter telescope of the European Southern Observatory (VLT) discovered the presence of an orbit of the spectral class in orbit around the star EPIC 206011496. This newly discovered object is 60 percent smaller than the Sun’s mass and is gravitationally connected to the main star.

Star EPIC 206011496 has a mass of the radius of the Sun and is 0.92 of the radius of our star. The effective temperature of the star is 5400 Kelvin, and the luminosity is 0.64 solar luminosity. However, many parameters of this system remain unknown, including age and distance to the Earth. It can be a young star, about 78 million years old, or Pro-evolutionary sun, 2.4 billion years old. If we talk about the distance to the system, then, according to some studies, it is about 753 light years, and other studies show that this distance is 300 light years less.

Star EPIC 206011496 was detected using the NASA Kepler (“Kepler”) space telescope, which performs an extended mission called K2. Recently, a group of researchers led by the Roxanne Ligi of the Brisco astronomical observatory, Italy, conducted direct observations of this star, and the remaining five scientific missions of the K2 mission showed signs of possible transit of exoplanets. This campaign was aimed at confirming or refuting the planetary nature of these transits.

The team in the League found that the star EPIC 206011496 is a binary system in which the companion is a dwarf of the spectral type M. However, until now it remains unknown to which of the two stars this system makes the transit of an exoplanet.

This newly discovered dwarf was designated EPIC 206011496 B and belongs to the spectral class M4-7. It has a mass of about 0.38 times the mass of the Sun and a radius of 0.12 to 0.26 of the radius of our star. The star is separated from the main component of the system by a distance of about 140 astronomical units (1a) .e. equal to the average distance from the Earth to the Sun), which indicates that the orbital period of the system is about 7000 years.

In the case of a mysterious exoplanet, a transit takes place in front of the star EPIC206011496 A, its radius is approximately 1.6 the radius of the Earth, and if the transit occurs on the accompanying star’s disk, then it is necessary to estimate the radius of the planet 2.37, the radius of the planet, the authors explained.

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